Yes thanks that engine is not lxqt is kvantum qt4/qt5 and that panel theme is just default Mageia and window bar is aurorae/kwin.Feel free to build that engine to Mageia if somebody else wan't to use it i have already filed bug in bugzilla.https://bugs.mageia.org/show_bug.cgi?id=15864

My lxqt desktop with kvantum qt4/5 theme engine,theme is kvgnome what is adwaita to kvantum and icons are plataro.Looks quite good i get uniform look with gtk2/3 qt4/qt5 applications is lxqt,kvgnome is bundled with kvantum so no need to manual install it.

I posted a screenshot a few years ago, but decided to update it today.

This is my Mageia 6 with KDE workstation, expanded into expo mode to show all 20 desktops. There presently are 5 virtual machines loaded. In the lower right corner is Windows 10. On the desktop to the left of Windows 10 is FreeBSD 8.4. Two desktops above Windows 10 is Windows 2000. The desktop to the left of Windows 2000 is Linux Mint 17.3.

On the other side of the display, the window that shows two people is OpenSUSE Leap 42.3. The two people are me and a friend of mine. The picture was taken in Tikal (an ancient Mayan city), Guatemala last spring.

The background picture on the Mageia 6 display is of an Orthodox monastery that is located north of Alba Iulia in Romania. I was riding a motorcycle south on the highway from Cluj to Alba Iulia when I saw the monastery, decided it was a very charming scene, and pulled off to get out my smartphone and take the picture. Now, I am not a photographer - not at all; I just point and click - but all the stars aligned with this picture, and it is an excellent picture. Composition, lighting, and focus was all perfect, and all purely coincidental.